US Bridges

County Road 8 over Alamosa River

FairPosted for load

Conejos County, Colorado · 0.2 MI N of Capulin/Sh 15 · Structure no. CON05.0W-14.2N

Built
1968
57 years old, rebuilt 2015
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
102
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 8 over Alamosa River is a steel stringer/multi-beam or girder carrying County Road 8 over Alamosa River in Conejos County, Colorado. It was built in 1968 and reconstructed in 2015, so it is 57 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 102 vehicles a day, projected to reach 118 by 2042. The structure is 47 ft (14.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 8
CrossesAlamosa River
Location0.2 MI N of Capulin/Sh 15
RouteCounty Highway 0
CountyConejos County
StateColorado
Coordinates37.28618, -106.11117
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.5 US tons
Inventory rating17.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length47 ft (14.2 m)
Longest span41 ft (12.5 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102 (2022)
Projected traffic118 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$605,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 8 over Alamosa River built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2015.

What condition is County Road 8 over Alamosa River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2025.

How much traffic does County Road 8 over Alamosa River carry?

About 102 vehicles per day (2022 count).

How long is County Road 8 over Alamosa River?

The structure is 47 ft (14.2 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.

Who owns County Road 8 over Alamosa River?

It is owned by the County Highway Agency.